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Development of New Construction Materials for Innovative Reactor Installation Designs
Atomic Energy  (IF0.298),  Pub Date : 2021-05-29, DOI: 10.1007/s10512-021-00741-8
A. B. Korostelev, S. V. Evropin, A. G. Derzhavin, I. V. Vershinin, O. V. Goslavskii, A. N. Romanov

Different stages of the development of new construction materials at NIKIET for innovative designs of reactor installations are analyzed. Justification is given for the use of large-sized intermediate products made of a nickel-based alloy (KhN55MVTs (ChS57) grade) for vessel elements and intermediate products made of molybdenum alloy of the TSM-7 type for the core elements of a high-temperature reactor installation. The next-generation corrosion-resistant steel EP302M-Sh has been developed and introduced for the BREST-OD-300 steam generator, and the production of extra-long pipes made from this steel has been mastered. Research is being performed on a new corrosion-resistant lean-alloyed steel with improved manufacturability metrics (EP750M grade).